Vitals is a term used to refer to the most important aspects of something. The two crossword solutions for this term are GUT (3 letters) and NITTYGRITTY (11 letters). GUT is an acronym for 'Gaining Understanding Through, ' which is a method of learning that involves understanding the core concepts of a subject before delving into the details. NITTYGRITTY, on the other hand, refers to the small details or specifics of something. Together, these two terms represent the two sides of vitals: the big picture and the small details.